Laravel无法找到我的服务

I added the services folder in my app. I added in composer.json the apps/services below apps/models.

Then I performed "composer dump-autoload"

Here's my Controller:

LogbookController.php

namespace App

use App\Services;

class LogbookController extends \BaseController {

public function index()
{
    return Response::json($this->retrieveCashLogbook('977'));

}

public function retrieveLogbookHeader($logbook){
    $log_id=$logbook->id;

    $logbook->log_shift=\App\Services\ShiftService::retrieveShift($log_id); 



    return $logbook;


}

public function retrieveCashLogbook($id){
    $logbook=Logbook::find($id);

    $logbook=$this->retrieveLogbookHeader($logbook);    
}

Here's my Service:

ShiftService.php

namespace App\Services;

//use App\Models\Shift;



class ShiftService {
    public static function retrieveShift($request){
        $shift=Shift::where("shift","=",$request)->first();
        return $shift;      
    }


}

It didn't matter if I put namespace App on the Service or I comment it out and replace it. It also didn't work when I used Use App\Services or Use\App\Services or Use \App\Services\ShiftService, it still doesn't get detected.

If I added namespace App or namespace App\Controllers on my LogbookController.php, the controller isn't detected. I'm confused what to do.

Is it the configuration? Am I missing something? Is there something wrong with composer and the setup? I'm currently using PHP 5.4 but my Laravel is also an older version.

My composer.json:

{
"name": "laravel/laravel",
"description": "The Laravel Framework.",
"keywords": ["framework", "laravel"],
"license": "MIT",
"require": {
    "laravel/framework": "4.1.*"
},
"autoload": {
    "classmap": [
        "app/commands",
        "app/controllers",
        "app/models",
        "app/services",
        "app/database/migrations",
        "app/database/seeds",
        "app/tests/TestCase.php"
    ]
},
"scripts": {
    "post-install-cmd": [
        "php artisan clear-compiled",
        "php artisan optimize"
    ],
    "post-update-cmd": [
        "php artisan clear-compiled",
        "php artisan optimize"
    ],
    "post-create-project-cmd": [
        "php artisan key:generate"
    ]
},
"config": {
    "preferred-install": "dist"
},
"minimum-stability": "stable"
}

I solved it,

First, when I entered composer dump-autoload the next day, it worked for some reason. I think it needed a hard reset.

Then I added this on the header of LogbookController.php:

use App\Services;
use App\Models;

class LogbookController extends \BaseController {
    ...

}

Then I added this on TransactionService.php

namespace App\Services;

use App\Models;
use App\Services\TransactionService;


class TransactionService {
    ...
}

Basically, the namespace and the use statements were tricky, so I had to test and retest using it.